Air filtration unit for an emergency vehicle



FIG. 1 is a rear perspective view of an air filtration unit for an emergency vehicle showing our new design;

FIG. 2 is slightly enlarged top, rear perspective view thereof;

FIG. 3 is a slightly enlarged rear elevation view thereof;

FIG. 4 is a slightly enlarged side elevation view thereof;

FIG. 5 is a slightly enlarged front elevation view thereof;

FIG. 6 is a slightly enlarged side elevation view showing the opposite side thereof; and,

FIG. 7 is a slightly enlarged top plan view thereof.

The fragmentary, broken line showing of an interior of the emergency vehicle in FIG. 1 of the drawing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an air filtration unit for an emergency vehicle, as shown and described. 